Transformers

A transformer is an electro-technical component that converts electric energy between various current and voltage levels by means of electromagnetic induction. The most common type of transformer can be considered to consist of three parts: a primary winding, a secondary winding and a core. An alternating current through the primary winding results in a magnetic field in the core that varies over time. The core transfers the magnetic field to the secondary winding inducing a voltage in it. The simplest type of transformer consists of an iron core and two metal wires that are wound round the core. Some designs have a number of windings on the secondary side.

Compotech’s transformers are suitable for a number of different applications. These are some examples:

Current transformers with or without DC tolerance featuring a high performance in a compact form for energy meters

Planar transformers with low build height for power units. The standard range includes power outputs ranging from 5 W to 5 KW, but higher power outputs can be offered on request.

Pulse transformers for IGBT modules. The transformers are based on amorphous or nanocrystalline cores, which means that the components can be compact and still have a high insulation capacity.

We cooperate with both European and Asian manufacturers and can therefore supply these as standard or customised from low to high volumes.

Current transformer with or without DC tolerance for energy meters

By using high-efficiency amorphous or nanocrystalline material in the core, you can achieve a high performance in a compact form.

Power transformer for power supply

The winding is made round different forms of core: ring core, E-core or C-core. Depending on the design and choice of material, it can also be used for low or high frequencies, therefore also for switched units.

Planar transformer

This type has a low build height and better efficiency compared with a wound transformer. The windings exist as printed circuits on a board or as flat coils lying between two halves of a core. Our standard range includes power outputs ranging from 5 W to 5 KW, but higher power outputs can be offered on request. Used for high frequencies.

Pulse transformer

Pulse transformers are used to register high frequency current pulses in applications with a switched power supply. Typical operating frequencies are approx. 20-300 kHz. Should be capable of controlling the high power levels used in IGBT modules with a high level of safety and low losses. The transformers are usually based on amorphous or nanocrystalline cores, which means that the components can be compact and still have a high insulation capacity.

PLC (Power Line Communication) transformer

Used in communication connections to provide isolation between the equipment and the network. Key parameters are its compact format, high isolation, low losses and low distortion.

Staffan Tornblad

We have taken on the most daunting challenges faced by the Nordic manufacturing sector for 25 years. Regardless of whether we are delivering components directly from our warehouse or involved in product development work, our vision has always been to provide more than anyone would ever expect.